winebuild: Support the --main-module option for stand-alone 16-bit modules.

tools/winebuild/build.h

@@ -89,6 +89,7 @@ typedef struct
     char            *file_name;          /* file name of the dll */
     char            *dll_name;           /* internal name of the dll */
     char            *init_func;          /* initialization routine */
+    char            *main_module;        /* main Win32 module for Win16 specs */
     SPEC_TYPE        type;               /* type of dll (Win16/Win32) */
     int              base;               /* ordinal base */
     int              limit;              /* ordinal limit */

tools/winebuild/main.c

@@ -82,7 +82,6 @@ char *spec_file_name = NULL;
 FILE *output_file = NULL;
 const char *output_file_name = NULL;
 static const char *output_file_source_name;
-static char *main_module;  /* FIXME: to be removed */
 
 char *as_command = NULL;
 char *ld_command = NULL;
@@ -360,8 +359,7 @@ static char **parse_options( int argc, char **argv, DLLSPEC *spec )
             else force_pointer_size = 8;
             break;
         case 'M':
-            spec->type = SPEC_WIN16;
-            main_module = xstrdup( optarg );
+            spec->main_module = xstrdup( optarg );
             break;
         case 'N':
             spec->dll_name = xstrdup( optarg );
@@ -586,24 +584,25 @@ int main(int argc, char **argv)
         if (spec->subsystem != IMAGE_SUBSYSTEM_NATIVE)
             spec->characteristics |= IMAGE_FILE_DLL;
         if (!spec_file_name) fatal_error( "missing .spec file\n" );
+        if (spec->type == SPEC_WIN32 && spec->main_module)  /* embedded 16-bit module */
+        {
+            spec->type = SPEC_WIN16;
+            load_resources( argv, spec );
+            if (parse_input_file( spec )) BuildSpec16File( spec );
+            break;
+        }
         /* fall through */
     case MODE_EXE:
         load_resources( argv, spec );
         load_import_libs( argv );
         if (spec_file_name && !parse_input_file( spec )) break;
+        read_undef_symbols( spec, argv );
         switch (spec->type)
         {
             case SPEC_WIN16:
-                if (!main_module)
-                {
-                    read_undef_symbols( spec, argv );
-                    output_spec16_file( spec );
-                }
-                else
-                    BuildSpec16File( spec );
+                output_spec16_file( spec );
                 break;
             case SPEC_WIN32:
-                read_undef_symbols( spec, argv );
                 BuildSpec32File( spec );
                 break;
             default: assert(0);

tools/winebuild/parser.c

@@ -743,6 +743,16 @@ void add_16bit_exports( DLLSPEC *spec32, DLLSPEC *spec16 )
     odp->ordinal = 1;
     odp->link_name = xstrdup( ".L__wine_spec_dos_header" );
 
+    if (spec16->main_module)
+    {
+        odp = add_entry_point( spec32 );
+        odp->type = TYPE_EXTERN;
+        odp->name = xstrdup( "__wine_spec_main_module" );
+        odp->lineno = 0;
+        odp->ordinal = 2;
+        odp->link_name = xstrdup( ".L__wine_spec_main_module" );
+    }
+
     assign_names( spec32 );
     assign_ordinals( spec32 );
 }

tools/winebuild/spec16.c

@@ -875,6 +875,12 @@ void output_spec16_file( DLLSPEC *spec16 )
     output_exports( spec32 );
     output_imports( spec16 );
     output_resources( spec16 );
+    if (spec16->main_module)
+    {
+        output( "\n\t%s\n", get_asm_string_section() );
+        output( ".L__wine_spec_main_module:\n" );
+        output( "\t%s \"%s\"\n", get_asm_string_keyword(), spec16->main_module );
+    }
     output_gnu_stack_note();
     free_dll_spec( spec32 );
 }